Edit: shortcode.php

<?php /** * Server-side rendering of the `core/shortcode` block. * * @package WordPress */ /** * Performs wpautop() on the shortcode block content. * * @param array $attributes The block attributes. * @param string $content The block content. * * @return string Returns the block content. */ function render_block_core_shortcode( $attributes, $content ) { return wpautop( $content ); } /** * Registers the `core/shortcode` block on server. */ function register_block_core_shortcode() { register_block_type_from_metadata( __DIR__ . '/shortcode', array( 'render_callback' => 'render_block_core_shortcode', ) ); } add_action( 'init', 'register_block_core_shortcode' );

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